Check patentability & draft patents in minutes with Patsnap Eureka AI!

Random bit generator with magnetic tunnel junction

a technology of random bits and tunnel junctions, applied in the direction of digital storage, magnetic measurements, instruments, etc., can solve the problem of somewhat difficult integration on the chip

Inactive Publication Date: 2014-01-23
SEAGATE TECH LLC
View PDF10 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The solution enables efficient control over the generation rate and probability of random bits, maintaining randomness while allowing for faster or slower bit production and modifying the likelihood of '0' or '1' bits, thus enhancing the performance of random number generation systems.

Problems solved by technology

Although this approach generates truly random bits, it is somewhat difficult to integrate on a chip.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Random bit generator with magnetic tunnel junction
  • Random bit generator with magnetic tunnel junction
  • Random bit generator with magnetic tunnel junction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016]This disclosure provides a random bit generator (RBG) device configured to generate random “0” and “1” bits using an AC current excited magnetic tunneling junction cell. The AC current induces thermal magnetization switching of the free layer of a magnetic tunneling junction cell. The speed and probability of random “0” and “1” bits can be controlled by altering the frequency and amplitude of the AC current. Additionally, addition of a biased DC pulse can be used to adjust the probability of the random “0” and “1” bits.

[0017]In the following description, reference is made to the accompanying set of drawings that form a part hereof and in which are shown by way of illustration at least one specific embodiment. It is to be understood that other embodiments are contemplated and may be made without departing from the scope or spirit of the present disclosure. The following detailed description, therefore, is not to be taken in a limiting sense. Any definitions provided herein are ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Devices and methods for generating a random number that utilizes a magnetic tunnel junction are disclosed. An AC current source can be in electrical connection to a magnetic tunnel junction to provide an AC current to the magnetic tunnel junction. A read circuit can be used to determine a bit based on a state of the magnetic tunnel junction. A rate of production of the bits can be adjusted, such as by adjusting a frequency or amplitude of the AC current. A probability of obtaining a “0” or “1” bit can be managed, such as by an addition of DC biasing to the AC current.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to U.S. patent application Ser. No. 12 / 399,127, filed on Mar. 6, 2009 and titled “Tunable Random Bit Generator with Magnetic Tunnel Junction”, which claimed priority to U.S. Provisional Patent Application No. 61 / 109,586, filed on Oct. 30, 2008 and titled “Tunable Random Bits Generator Through AC Current Excited Magnetic Tunnel Junction”, the entire contents of both are hereby incorporated by reference in their entirety.BACKGROUND[0002]Because of the desire to be able to communicate in a secure manner, computers have some internal system for generating encryption keys. These encryption keys are typically random “0” and “1” numbers and are generated by a “random number generator” (RNG). The randomness of the “0” and “1” numbers is designed to be completely unpredictable, including to those who know how the random number generator is designed. A “true random number generator” (TRNG) uses a non-deterministic s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): G11C11/16
CPCG11C11/1675G01R33/098G06F7/588G11C11/161G11C11/1697
Inventor WANG, XIAOBINZHU, WENZHONGHUANG, HENRYCHEN, YIRANXI, HAIWEN
Owner SEAGATE TECH LLC
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com